Apparatus for securing a flashlight and an object to one another, the flashlight including a body with a lamp housing along a longitudinal axis, the lamp housing including longitudinal slots and the body including a groove perpendicular to the axis and intersecting the slots. The object, which may be a knife blade or a bracket, includes slot-engaging parts (preferably longitudinally extending tangs) for being slidably received by the slots. A retainer is disposed in the flashlight body groove and is adapted for cooperation with the tangs for releasably retaining the tangs in the slots.